BA 5230 en 04/2011
5.7.2
Cooling coil
The gear unit can be fitted with a cooling coil in the oil sump. Cooling water is supplied by way of a water
connection. The operator must ensure this. Either fresh water, sea water or brackish water can be used
for cooling purposes.
When water is flowing through the cooling coil, a certain amount of heat is transferred from the oil to the
water and thereby removed from the system.
3
X
X
2
1
Fig. 8:
Cooling coil on gear unit
1
Coolingwater connection
2
Reducing screw
3
Output shaft
A detailed view of the gear unit can be obtained from the drawings in the gearunit documentation.
Complete immersion of the cooling coil must be ensured, because otherwise water
condensation may occur.
The water can flow through the gear unit in either direction. The pressure of the cooling
water must not exceed 8 bar.
If the gear unit is being withdrawn from service for a longer period and if there is
a danger of freezing, the cooling water must be drained off. Remove any remaining
water with compressed air.
The ends of the cooling coil must never be twisted because this could destroy the
cooling coil.
The reducing bolt must not be tightened or demounted because this may result in
damage to the cooling coil.
Be especially careful when blowing with compressed air.
Wear protective glasses!
Avoid too high pressure on the coolingwater entry. For this a coolingwater flow control must
be used (e.g. a pressure reducer or a suitable valve).
For connection dimensions, refer to the dimensioned drawing of the gear unit. The required
coolingwater quantity and the maximum permissible inlet temperature are given on the data
sheet and/or the list of equipment.
